.......<.... .............. .. . ‘ 2. The Task Group recommends use of 100 percent of the FRC RPG’s to evaluate post-cleanup and rehabilitation and postreturn conditions wherein direct measurement of levels of radiation and radioactivity in foods and in people are made. Under such conditions, dose estimates should be The requirement is to subject to much less uncertainty. assure that exposures are well within the FRC standards. See section A. of this .4ppendix for the FRC RPG’ so 3. The criteria for evaluating gonadal exposures at Enewetak Atoll should be 4 reins in 30 years. The requirement is to assure that long-term exposures till be well within this The Task Group feels justified in using 80 percent criteria. rather than 50 percent of the FRC standard since there will be ample time to verify exposure estimates using actual sampling of the diet and time to follow the changing pattern of exposures of people. 4. The recommended at Enewetak ........ ............ —. ... guidance is: Atoll - corrective a. < 40 pCi/g b. 40 to 400 pCi/g c. > 400 pCi/g for cleanup action of 239 Pu in soil not required. — action may be needed. - corrective to be taken should be determined case-by-case basis. - corrective action Action on a required. In applying the criteria for bone and bone marrow in part 1 above, it is assumed that if annual exposures do not exceed the applicable criteria in the year of highest dose, there will not be ‘a requirement for limiting longer term cumulative On the other hand, implementation of the e.xpo sures. concept w-ill require considerations of “lowest practicable” effectiveness of remedial measures to reduce both annual and longer term exposures to the estent practicable. F. Risk Considerations The Task Group and its technical advisors have reviewed the available information from ICRP, UXSCEAR, and the IVational Academy of Science BEIR Committee that could be used to .. ........ .... .... .. ..... .... . .. 7 .... ...... .. .. ..... ... III–1 1